1. LIM Mineralization Protein-1 Inhibits the Malignant Phenotypes of Human Osteosarcoma Cells.
- Author
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Huiwen Liu, Lu Huang, Zhongzu Zhang, Zhanming Zhang, Zhiming Yu, Xiang Chen, Zhuo Chen, Yongping Zen, Dong Yang, Zhimin Han, Yong Shu, Min Dai, and Kai Cao
- Subjects
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BIOMINERALIZATION , *HUMAN phenotype , *OSTEOSARCOMA , *CANCER cells , *BONE tumors , *TUMOR suppressor genes , *TUMOR treatment - Abstract
Osteosarcoma (OS), also known as osteogenic sarcoma, is the most common primary malignancy of bone tumor in children and adolescents. However, its underlying molecular pathogenesis is still only vaguely understood. Recently, LIM mineralization protein-1 (LMP-1) was reported to be an essential positive regulator of osteoblast differentiation. In the present study, we found that the expression of LMP-1 is downregulated in OS tissues compared with adjacent normal tissues. Moreover, we restored the expression of LMP-1 through a recombinant adenovirus. Overexpression of LMP-1 inhibited cell proliferation and invasion, arrested cell cycle progression, and induced apoptosis in vitro. Finally, ectopic LMP-1 expression suppressed the expression of Runx2 and BMP-2 in OS cells. These data demonstrate that LMP-1 is an essential tumor suppressor in the OS pathological process, which will provide a new opportunity for discovering and identifying novel effective treatment strategies. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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